White House Deputy Chief of Staff Katie Walsh is departing the West Wing to join the pro-Trump outside group America First Policies, according to senior Administration officials. Walsh, a top aide of White House Chief of Staff Reince Priebus, served as one of the top gatekeepers for President Trump, controlling the White House schedule. The move comes as the White House struggles to reboot after the failure of a bill to repeal major chunks of the Affordable Care Act.